kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 11606 Comm: syz-executor.0 Not tainted 5.3.0-rc3-next-20190806 #60
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:kstrtoull lib/kstrtox.c:123 [inline]
RIP: 0010:kstrtouint+0x85/0x1a0 lib/kstrtox.c:222
Code: 04 00 f3 f3 f3 65 48 8b 04 25 28 00 00 00 48 89 45 d0 31 c0 e8 6c 18 35 fe 4c 89 e2 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <0f> b6 04 02 4c 89 e2 83 e2 07 38 d0 7f 08 84 c0 0f 85 db 00 00 00
RSP: 0018:ffff888059b079e0 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffff888059b07b38 RCX: ffffc90005f45000
RDX: 0000000000000000 RSI: ffffffff833d0b54 RDI: 0000000000000000
RBP: ffff888059b07a70 R08: ffff88805991e400 R09: ffffed10126a34e1
R10: ffffed10126a34e0 R11: 0000000000000003 R12: 0000000000000000
R13: 1ffff1100b360f3d R14: ffff888059b07a48 R15: 0000000000000000
FS:  00007f096da09700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000625208 CR3: 000000009831f000 CR4: 00000000001426e0
DR0: 0000000000000001 DR1: 0000000000000004 DR2: 0000000000000002
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 fs_parse+0xde1/0x1080 fs/fs_parser.c:209
 fuse_parse_param+0xac/0x750 fs/fuse/inode.c:491
 vfs_parse_fs_param+0x2ca/0x540 fs/fs_context.c:145
 vfs_parse_fs_string+0x105/0x170 fs/fs_context.c:188
 generic_parse_monolithic+0x181/0x200 fs/fs_context.c:228
 parse_monolithic_mount_data+0x69/0x90 fs/fs_context.c:708
 do_new_mount fs/namespace.c:2787 [inline]
 do_mount+0x1369/0x1c30 fs/namespace.c:3111
 ksys_mount+0xdb/0x150 fs/namespace.c:3320
 __do_sys_mount fs/namespace.c:3334 [inline]
 __se_sys_mount fs/namespace.c:3331 [inline]
 __x64_sys_mount+0xbe/0x150 fs/namespace.c:3331
 do_syscall_64+0xfa/0x760 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x459829
Code: fd b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f096da08c78 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000459829
RDX: 0000000020000080 RSI: 0000000020000000 RDI: 0000000000000000
RBP: 000000000075bf20 R08: 00000000200000c0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f096da096d4
R13: 00000000004c5e2b R14: 00000000004da878 R15: 00000000ffffffff
Modules linked in:
---[ end trace 67e1a446d8e42557 ]---
RIP: 0010:kstrtoull lib/kstrtox.c:123 [inline]
RIP: 0010:kstrtouint+0x85/0x1a0 lib/kstrtox.c:222
Code: 04 00 f3 f3 f3 65 48 8b 04 25 28 00 00 00 48 89 45 d0 31 c0 e8 6c 18 35 fe 4c 89 e2 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <0f> b6 04 02 4c 89 e2 83 e2 07 38 d0 7f 08 84 c0 0f 85 db 00 00 00
RSP: 0018:ffff888059b079e0 EFLAGS: 00010246
RAX: dffffc0000000000 RBX: ffff888059b07b38 RCX: ffffc90005f45000
RDX: 0000000000000000 RSI: ffffffff833d0b54 RDI: 0000000000000000
RBP: ffff888059b07a70 R08: ffff88805991e400 R09: ffffed10126a34e1
R10: ffffed10126a34e0 R11: 0000000000000003 R12: 0000000000000000
R13: 1ffff1100b360f3d R14: ffff888059b07a48 R15: 0000000000000000
FS:  00007f096da09700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000007126b4 CR3: 000000009831f000 CR4: 00000000001426f0
DR0: 0000000000000001 DR1: 0000000000000004 DR2: 0000000000000002
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400